Beagle is a desktop-independent service for indexing and searching
your data. The Beagle daemon transparently monitors your data and updates the index to reflect any changes. On an inotify-enabled system, these updates (e.g. new files, emails, chat) happen more-or-less in real time. Beagle
... [More] supports many different file formats and can index files/email/browsing history/chat logs/RSS feeds etc. [Less]
Tracker is a first class object database, extensible tag/metadata database, search tool and indexer.
It can trawl through your hard drive and index existing files and data stores
It has been designed from the ground up to be very lightweight (the tracker daemon consumes ~4MB of RAM in typical
... [More] use) yet at the same time very fast too.
It provides a comprehensive, persistent and extensible storage system that can store and index almost any object. These objects can also have extensible user defined metadata and tags to create rich first class objects. [Less]
Xapian is an Open Source Search Engine Library, released under the GPL. It's written in C++, with bindings to allow use from Perl, Python, PHP, Java, Tcl, C#, Ruby, Lua and Erlang (so far!)
Xapian is a highly adaptable toolkit which allows developers to easily add advanced indexing and search
... [More] facilities to their own applications. It supports the Probabilistic Information Retrieval model and also supports a rich set of boolean query operators. [Less]
Sphinx is a full-text search engine, it's a standalone search engine, meant to provide fast, size-efficient and relevant full-text search functions to other applications. Sphinx was specially designed to integrate well with SQL databases and scripting languages.
Whoosh is a fast, featureful full-text indexing and searching library implemented in pure Python.
Some of Whoosh's features include:
* Pythonic API.
* Pure-Python. No compilation or binary packages needed, no mysterious crashes.
* Fielded indexing and search.
* Fast indexing and retrieval
... [More] -- much faster than any other pure-Python solution.
* Pluggable scoring algorithm (including BM25F), text analysis, storage, posting format, etc.
* Powerful query language.
* Pure Python spell-checker. [Less]
BlackRay is a relational database system designed to offer performance features commonly associated with search engines. It offers SQL support and sophisticated operational and management features. Load-balancing and operational stability by means of N+1 redundance are included.
BlackRay is
... [More] called a "Data Engine" since it combines traditional, relational database features and SQL with the power and flexibility of search engines. It is a true hybrid, offering transaction support, data-versioned snapshots, and sophisticated function-based indices. Wildcards, phonetic, and fuzzy logic searches are supported, as well.
Commercial support is available, and the project is released under a the GPLv2 license. [Less]
Alfanous (The Lantern - الفانوس ) is an Arabic search engine API provide the simple and advanced search in the Holy Quran , more features and many interfaces... (Implemented using Whoosh)
Features
* Advanced Query
* Many Output Improvements
* Many Arabic Aspects
* Many
... [More] Quranic Options
* Suggestion System
* Json Output Service - dj.alfanous.org/jos2
* QT User Interface for Ubuntu and Windows
* Web User Interface - dj.alfanous.org [Less]
OpenSearchServer is a powerful, enterprise-class, search engine program. With the web user interface, the crawlers (web, file, database, ...) and its REST API you will be able to integrate quickly and easily advanced full-text search capabilities in your application. OpenSearchServer runs on Windows
... [More] and Linux/Unix/BSD
Multilingual lemmatization, spellcheck, stop words, synonyms, facet, filters, web crawler, database crawler, local and remote file system crawler, documents indexation with OCR, REST with XML or JSON and SOAP API. [Less]
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